Shield cable, wiring component, and information apparatus

Abstract

A shield cable, in which a winding looseness of a shield layer due to twisting can be decreased and a short-circuit between a shield layer and signal conductor as well as a disconnection of the signal conductor is prevented, and a wiring component and information apparatus having the shield cable are provided. A twisted conductor is covered with an insulator to form an insulated wire with an outer diameter of 0.3 mm or less. This insulated wire is covered with a shield conductor and a sheath so as to form a shield cable. The shield conductor consists of a plurality of shield layers. The first shield layer at an inner most part is formed by winding conductors spirally with a scroll pitch of 7 to 13 mm. One shield cable may contain two insulated wires.

1. A shield cable comprising:
 two insulated wires, having diameters not more than 0.3 mm, and covered with a shield conductor and a sheath, 
 each of said insulated wires comprising a signal conductor covered with an insulator, 
 said shield conductor consisting of a plurality of shield layers, wherein 
 a first shield layer constituting the innermost layer of said plurality of shield layers consists of a plurality of conductors spirally wound at a pitch of 10 to 13 mm; 
 a second shield layer is formed by spirally winding a plurality of conductors on said first shield layer in a counter winding direction relative to that of said first shield layer; a scroll pitch of said second shield layer is not more than a scroll pitch of said first shield layer; and 
 said sheath and said plurality of shield layers integrally cover said insulated wires. 
 
     
     
       2. A wiring component in which a plurality of shield cables according to  claim 1  are bundled and a connecting terminal portion is provided at least at one end of said wiring component. 
     
     
       3. An information apparatus having a shield cable according to  claim 1 , said shield cable being used for a signal wiring to pass through a hinged portion of said information apparatus. 
     
     
       4. An information apparatus having a wiring component according to  claim 2 , said wiring component being used for a signal wiring to pass through a hinged portion of said information apparatus.